Railway car truck



Feb 23, 1937.. J. HEKTNER RAILWAY CAR TRUCK 2 Sheets-Sheet 1 Filed Sept. 3, 1935 mvezvroe."

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RAILWAY CAR TRUCK Filed Sept. 3, 1935 2 Sheets-Sheet 2 LMW Patented Feb. 23, 1937 UNITED STATES PATENT OFFICE RAILWAY CAR TRUCK Joel Hektner, Canton, Ohio, assignor to The Timken Roller Bearing Company, Canton, Ohio,

a corporation of Ohio Application September 3, 1935, Serial No. 38,866

3 Claims.

My invention relates to trucks for railway cars whose axles are mounted in antifriction bearings and it has for its principal object to relieve the bearings of such an axle of torsional strains due to individual wheel or axle movements relative to other parts of the truck. The invention consists principally in mounting the bearing housing of such an axle or frame in such a way as to permit such housing to have a pivotal movement about an axis transverse to the axle and also about an axis parallel to the axle, such double pivoting of the bearing housing permitting selfalining movement of the bearings and thus relieving them of torsional strains. The invention further consists in the railway car truck and in the parts and combinations and arrangements of parts hereinafter described and claimed.

In the accompanying drawings,

Fig. 1 is a part end elevation, part vertical sectional view of a railway car axle and the adjacent portion of a car truck embodying my invention,

Fig. 2 is a longitudinal vertical sectional view on the line 2-2 in Fig. 1,

Fig. 3 is a side view of the bearing housing or journal box,

Fig. 4 is a plan view of the construction shown in Fig. 1,

Fig. 5 is a vertical sectional view of a modified form of the invention,

Fig. 6 is a sectional View on the line 6--6 in Fig. 5, and

Fig. '7 is a sectional view on the line 'l-1 in Fig. 6.

In the form of the invention shown in Figs. 1 to 4, spaced taper roller bearings are mounted on the reduced end portion I of the axle 2 of a railway car or the like. The cones 3 or inner hearing members are spaced apart by a sleeve 4 mounted on the axle. The bearing cones 3 are arranged with their large ends disposed inwardly and the innermost bearing cone 3 is mounted against a closure and abutment ring 5 which is seated against a shoulder 6 on the axle. Bearing rollers l are mounted on said cone and the cups 8 or outer bearing members are mounted in a housing 9 whose outer end is closed by a cap that is secured to the housing by screws H and that has an inwardly extending sleeve portion I2 that abuts against the outermost bearing cup 8, Shims l3 interposed between the cap and the end of the housing provide adjustment of the bearings. The innermost end of the bearing housing 9 is closed by a ring l4 that is secured to the housing by screws l and has a sleeve portion [6 extending inwardly into the bearing housabout an axis parallel with the axle. In the embodiment shown in Figs. 1 to 4, said housing 9 is provided with a boss I? on its upper surface which extends transversely to the axle and which has a bore l8 therethrough in which is tightly mounted a pin l9. Said pin l9 has its ends mounted in bearing collars 20 that are welded to web members 2| that form part of a hanger frame F that supports the end of said axle. The end members 22 of said hanger frame are spaced open plate members that are welded to the sides of said webs 2| and extend around the housing 9. Bushings 23 for the ends of said pin may be mounted in said bearing collars 20 and the pin may be secured in place by suitable cotter pins 24. The openings 25 in said frame plates are large enough to permit swinging movement of said housing therein.

The top portions of said frame plates 22 are provided with alining openings therethrough to receive a pin 21 on which is mounted the end of a spring 28. The bottom portions of said frame plates are provided with similar openings 29 to receive the pin 30 of a bottom spring 3|. Washers may be welded to said plates over said openings to provide a stronger support for said pinsa The drawings show only one end portion of one axle, it being understood that the other end portion and the other axle will be of similar construction and that said top and bottom spring members will extend from axle to axle to make a resilient truck side frame.

The pivotal mounting of the bearing housing in the hanger frame by means of the pivot pin permits swinging of said housing about an axis transverse to the axle; and the pivotal mounting of the spring eye on the spring mounting pin permits movement of the hanger frame and bearing housing about an axis parallel to the axle. Thus the bearing housing and bearings are capable of self-alining action to relieve them of torsional strain during any relative movement of one axle with respect to the other or of one end of one axle with respect to the other end.

In the modification shown in Figs. 5 to '7, a truck side frame 4! of common construction is shown as provided with an end portion 42 that has spaced perforated bosses 43 to: receive a pin 44 that is disposed transversely to the axle.

Mounted on said pin is a pivot block that has a central stem portion 46 of cylindrical configuration oscillatable in a concave seat 41 provided in the end portion of said side frame 4| and which has projecting bottom flange portions 48 that are received in slots 49 formed by upstanding lugs 50 on the bearing housing 911, said lugs having flanged portions 5! overlapping the sides of said pivot block flanges 48. Said flanges 48 are convexly curved from end to end, whereby said bearing housing 9a is permitted swinging movement on said flanges 48 of mid pivot block 45. I

The modification shown in Figs. 5 to '7 permits swinging movement of the bearings and housing about two difierent axes, as in the case of the modification shown in Figs. 1 to 4. Said modification constitutes the subject matter of my" divisional application Serial No. 89,924 filed July 10, 1936.

The above described constructions permit self alining movement of the bearings and housing While maintaining tightness of fit of the parts under all conditions. Obviously, numerous changes might be made, particularly in the truck side frame construction and in the bearing arrangement, without departing from the invention and I do not wish to be limited to the precise construction shown.

What I claim is:

1. A car truck comprising a frame member, an:

axle, a bearing housing receiving said axle, antifriction bearings between said axle'an'd said housing, a pivot pin mounted in said frame member above the level of the body of said housing and disposed transversely of said axle, said housing having a perforated projection on its top by which it is pivotally suspended on said pivot pin, and springs extending transversely of said axle and secured respectively to the top and to thebottom of said frame member.

2. A car truck comprising top and bottom springs, a hanger frame pivotally secured to the ends of said top and bottom springs, a bearing housing extending through said hanger frame, the top of said housing being pivotally secured to said hanger frame by means located wholly above said housing and transversely to the axis of said first mentioned pivotal connection, an axle extending into said housing and antifriction bearings between said axle and said housing.

3. A car truck comprising top and bottomsprings, a hanger frame pivotally secured to the ends of said top and bottom springs, said hanger frame comprising spaced end plates and connecting webs, said'end' plates having alining openings at top' and: bottom, pins in each pair of said openings supporting the end of one of said springs and said connecting webs having alining openings, a bearing housing extending through said hanger frame, the top of said housing being pivotally secured to said hanger frame transversely to the axis of said first mentioned pivotal" connection by means of a pivot pin whose ends are mounted in said alining openings of said connecting webs, an axle extending into said housing and antifriction bearings between said axle and said housing.

JOEL HEKTNER. 

